Refactor to separate backend object lifecycle and GpuResource budget decision

src/gpu/GrResourceCache.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrResourceCache_DEFINED
 #define GrResourceCache_DEFINED
 
@@ skipping 170 matching lines @@
 
     void notifyFlushOccurred();
 
 #if GR_CACHE_STATS
     struct Stats {
         int fTotal;
         int fNumPurgeable;
         int fNumNonPurgeable;
 
         int fScratch;
-        int fExternal;
-        int fBorrowed;
-        int fAdopted;
+        int fWrapped;
         size_t fUnbudgetedSize;
 
         Stats() { this->reset(); }
 
         void reset() {
             fTotal = 0;
             fNumPurgeable = 0;
             fNumNonPurgeable = 0;
             fScratch = 0;
-            fExternal = 0;
-            fBorrowed = 0;
-            fAdopted = 0;
+            fWrapped = 0;
             fUnbudgetedSize = 0;
         }
 
         void update(GrGpuResource* resource) {
             if (resource->cacheAccess().isScratch()) {
                 ++fScratch;
             }
-            if (resource->resourcePriv().isExternal()) {
-                ++fExternal;
-            }
-            if (resource->cacheAccess().isBorrowed()) {
-                ++fBorrowed;
-            }
-            if (resource->cacheAccess().isAdopted()) {
-                ++fAdopted;
+            if (resource->resourcePriv().refsWrappedObjects()) {
+                ++fWrapped;
             }
             if (SkBudgeted::kNo  == resource->resourcePriv().isBudgeted()) {
                 fUnbudgetedSize += resource->gpuMemorySize();
             }
         }
     };
 
     void getStats(Stats*) const;
 
     void dumpStats(SkString*) const;
@@ skipping 199 matching lines @@
 
     friend class GrGpuResource; // To access all the proxy inline methods.
     friend class GrResourceCache; // To create this type.
 };
 
 inline GrResourceCache::ResourceAccess GrResourceCache::resourceAccess() {
     return ResourceAccess(this);
 }
 
 #endif